/ Duct tape as trad gear

I was recently talking with some Finnish friends while we made some repairs with duct tape. They said "in Finland we call Duct tape 'Jesus tape', because it can do miracles" we started joking about using it tape quick draws to bold climbs.

Later after a few more beers, we considered would this actually possible?

Ive seen pictures on the internets of unfortunate drunk people taped to ceilings..so it must have pretty good holding power.

Which rock type would it be most sticky to? Although granite is the roughest I was thinking something like slate would actually be the best because you'd get the most surface contact.

So given an unlimited supply of duct tape. How large and area would be required to create a bomber runner on a totally blank slab?

A reckon a couple of square meters might start registering in the 5-6kn range? ....

On something smooth, clean, dry and non-porous like water worn granite with the right sort of convex slab to overhang transition feature guaranteeing it's loaded purely in shear rather than peeled I doubt you'd need more than a few meters. Maybe 10 meters of tape to make a body-weight anchor assuming you can get it all to equalize nicely. Test, reassess then scale up from there to 'bomber'

In reply to Kemics: There is a picture in a 70's climbing mag, Rocksport I think, showing someone holding small slings in place with tape. I think it may have been on Troach or something similar. It was definitely Cloggy.